“30 ROCK” 7:30 p.m., KUSA-Channel 9 | Jerry Seinfeld pays a visit to Tina Fey’s Emmy-winning sitcom. In the season premiere, bumbling NBC suit Jack Donaghy (Alec Baldwin) thinks up a way to insert Seinfeld’s image into every show on the network.

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“SMALLVILLE” 7 p.m., KWGN-Channel 2 | Clark’s cousin Kara, ie. Supergirl, shows up in town, bare midrift and all. Laura Vandervoort (“Goosebumps”) joins the cast with the promise that she’ll do many of her own stunts.

The long-awaited exhibition will feature artifacts, stories and perspective on the historical role of brewing in Colorado's fortunes, from Adolph Coors' first experiments to (relative) upstarts and current titans such as New Belgium Brewing.